CX811 BostonBOS · 01:45 Hong KongHKG · 05:00
CX811 by Cathay Pacific flies from Boston (BOS) to Hong Kong (HKG) for the Sat, Sep 19 departure.
arrival expected at HKG · on schedule
board checked 74m ago · checking again in 45s
Where the minutes go
last 4 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at BOS and HKG are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
How CX811 actually runs
Pro Flight Search has tracked every published board update for CX811 across the BOS and HKG boards: schedule changes, gate pushes and actual clocks. Usually lands ~12 min early. Based on 4 confirmed landings · 4/4 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how CX811 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as BOS and HKG published them.
Planning around CX811? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — CX811 Boston to Hong Kong on-time performance, measured from the BOS and HKG airport boards.
https://proflightsearch.com/flight/CX811
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